Wiper frame

Abstract

Disclosed is a wiper frame (10) comprising a resilient support rail (22) and a wiper blade (12) which is attached to the support rail (22). According to the invention, the wiper blade (12) has a wiper blade lip (44) having a substantially rigid cross-sectional structure, and the wiper blade lip (44) is mounted between a first bending region (32) and a second bending region (34) in a cross-sectional view.

What is claimed is: 
     
       1. A wiper frame ( 10 ) comprising a resilient support rail ( 22 ) and a wiper blade ( 12 ) which is attached to the support rail ( 22 ), characterized in that the wiper blade ( 12 ) has a wiper blade lip ( 44 ) having a substantially rigid cross-sectional structure and the wiper blade lip ( 44 ) is mounted between an elongated first bending region ( 32 ) and a second bending region ( 34 ) in a cross-sectional view,
 wherein the first bending region ( 32 ) extends from the resilient support rail ( 22 ) to a first support shoulder ( 46 ) at a free terminal end of the first bending region, the first support shoulder ( 46 ) defining a transition to a first resilient region ( 38 ) having a cross-sectional thickness that is at most half of a cross-sectional thickness of the first bending region ( 32 ), 
 wherein the first support shoulder ( 46 ) is configured to engage the wiper blade lip ( 44 ) when the wiper blade lip ( 44 ) rotates or tilts as a result of moving in a wiping motion, 
 wherein the first bending region ( 32 ), the second bending region ( 34 ), the first resilient region ( 38 ), and the wiper blade lip ( 44 ) all intersect a same plane that extends parallel to the resilient support rail ( 22 ), 
 wherein a width of the first resilient region ( 38 ) is defined as a distance the first resilient region ( 38 ) extends between the wiper blade lip ( 44 ) and the free terminal end of the first bending region ( 32 ), and 
 wherein the width of the first resilient region ( 38 ) is between 0.05 mm and 0.8 mm. 
 
     
     
       2. The wiper frame ( 10 ) as claimed in  claim 1 , characterized in that a first attachment region ( 28 ), which adjoins at least the first bending region ( 32 ), is provided for attaching the wiper blade lip ( 44 ) to the support rail ( 22 ). 
     
     
       3. The wiper frame ( 10 ) as claimed in  claim 2 , characterized in that a second attachment region ( 30 ), which adjoins the second bending region ( 34 ) and which is provided for attaching the wiper blade lip ( 44 ) to the support rail ( 22 ), is provided. 
     
     
       4. The wiper frame ( 10 ) as claimed in  claim 3 , characterized in that the second bending region ( 34 ) comprises at least one second support shoulder ( 48 ) for supporting the wiper blade lip ( 44 ). 
     
     
       5. The wiper frame ( 10 ) as claimed in  claim 3 , characterized in that the support rail ( 22 ) is configured as a spring rail which has a planar cross section and which has longitudinal edges ( 52 ,  56 ) and the first attachment region ( 28 ) and/or the second attachment region ( 30 ) encompasses the longitudinal edges ( 52 ,  56 ). 
     
     
       6. The wiper frame ( 10 ) as claimed in  claim 2 , characterized in that the support rail ( 22 ) is divided into two in the longitudinal direction, into a first rail part ( 24 ) and a second rail part ( 26 ), and the first attachment region ( 28 ) mounts the wiper blade ( 12 ) between the first rail part ( 24 ) and the second rail part ( 26 ). 
     
     
       7. The wiper frame ( 10 ) as claimed in  claim 1 , characterized in that the wiper blade lip ( 44 ) has a substantially triangular outer contour in cross section. 
     
     
       8. The wiper frame ( 10 ) as claimed in  claim 1 , characterized in that the first bending region ( 32 ) has a first stabilizing region ( 36 ). 
     
     
       9. The wiper frame ( 10 ) as claimed in  claim 8 , characterized in that the second bending region ( 34 ) has a second stabilizing region ( 40 ) and a second resilient region ( 42 ). 
     
     
       10. The wiper frame ( 10 ) as claimed in  claim 9 , characterized in that the second resilient region ( 42 ) directly adjoins the wiper blade lip ( 44 ). 
     
     
       11. The wiper frame ( 10 ) as claimed in  claim 9 , characterized in that a second support shoulder ( 48 ) is provided on the second stabilizing region ( 40 ) of the second bending region ( 34 ). 
     
     
       12. The wiper frame ( 10 ) as claimed in  claim 9 , characterized in that the second resilient region ( 42 ) also intersects the plane. 
     
     
       13. The wiper frame ( 10 ) as claimed in  claim 9 , characterized in that a width of the second resilient region ( 42 ) is defined as a distance the second resilient region ( 42 ) extends between the wiper blade lip ( 44 ) and the second bending region ( 34 ), and
 wherein the width of the second resilient region ( 42 ) is between 0.05 mm and 0.8 mm. 
 
     
     
       14. The wiper frame ( 10 ) as claimed in  claim 13 , characterized in that the width of the first and the second resilient regions ( 38 ,  42 ) is between 0.1 mm and 0.6 mm. 
     
     
       15. The wiper frame ( 10 ) as claimed in  claim 14 , characterized in that the width of the first and the second resilient regions ( 38 ,  42 ) is 0.35 mm. 
     
     
       16. The wiper frame ( 10 ) as claimed in  claim 8 , characterized in that the first support shoulder ( 46 ) is provided on the first stabilizing region ( 36 ) of the first bending region ( 32 ). 
     
     
       17. The wiper frame ( 10 ) as claimed in  claim 1 , characterized in that the first resilient region ( 38 ) directly adjoins the wiper blade lip ( 44 ).